The manufacturer of the only automatic transmission used on the Aveo is Aisin, not GM. Their specifications (not GM, not Chevy) call for Dexron III for that particular transmission, the 81-40LE. That pertains to all Aveos from their inception and it hasn't changed since. GM can put the A/T fluid in a special GM bottle with their part number on it and call it whatever they want - but it's still Dexron III.

The manufacturer of the only automatic transmission used on the Aveo is Aisin, not GM. Their specifications (not GM, not Chevy) call for Dexron III for that particular transmission, the 81-40LE. That pertains to all Aveos from their inception and it hasn't changed since. GM can put the A/T fluid in a special GM bottle with their part number on it and call it whatever they want - but it's still Dexron III.

That is not specifically for the aveo, for GM of na. Putting standard Dexron 3 in, regardless of what Aisin recommended will void the warranty gm gives you. Even with the same transmission code, you can not verify that the clutches have not changed or do not benefit from the high friction yields of the t-iv fluid. This is one of the issues even toyota faces with the same tranny code, and switching fluids between years.

The manufacturer of the only automatic transmission used on the Aveo is Aisin, not GM. Their specifications (not GM, not Chevy) call for Dexron III for that particular transmission, the 81-40LE. That pertains to all Aveos from their inception and it hasn't changed since. GM can put the A/T fluid in a special GM bottle with their part number on it and call it whatever they want - but it's still Dexron III.

You can spout your 'transmission manufacturer specs' all you want. The thing is, all it takes is a change in line pressure, or some stupid little transmission control module programming change to change which fluid is put in by the manufacturer. Factory fill on different year Aveos is DIFFERENT. Some years had Type 3, others (like my 09) came filled with Type IV.

As is stated several times in this thread right here, there are certain types of fluids that are NOT interchangeable.